Browsing by Author "Hsu, Huai-Yuan"

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USING NEUROFUZZY NETWORKS TO MIMIC ANESTHESIOLOGIST KNOWLEDGE IN DECISION MAKING ON PROPOFOL ADMINISTRATION
(2010-12-01)
Wu, Hung-Shan
;
Hsu, Huai-Yuan
;
Chang, Chia-Chi
;
Hsiao, Tzu-Chien
;
分子醫學與生物工程研究所
The purpose of anesthesia is to maintain a steady state for specific clinical operations. In general, one anesthesiologist utilizes anesthetic drugs and anesthetic skills to make sure the depth of anesthesia (DOA) carefully in proper level such that a patient will not perceive pain during surgical procedure. It is complex to be treated as an art to reduce all sensations, whether it is the sense of pain, touch, temperature, or position. In this paper, utilizing the self-learning and the human-like reasoning ability of neurofuzzy networks, we design the virtual anesthesiologist to accommodate the knowledge and the experience of the real anesthesiologist in anesthetic drug administration. The heart rate and bispectral index are used as the input variables and the bispectral index target value (BIS(target)) heart is treated as output variable. The anesthesia simulator is adopted to verify the virtual anesthesiologist's ability and to explore the patient status of the simulator. The pilot experiments and extended experiments have been carried out. The result showed that the virtual anesthesiologist was able to support the decision making on the maintenance of the patient DOA at BIS(target) 60.
Wheelchair Direction Control by Acquiring Vocal Cords Vibration with Multivariate Analysis
(2009)
Hsu, Chia-Hua
;
Hsu, Huai-Yuan
;
Wang, Hsin-Yi
;
Hsiao, Tzu-Chien
;
分子醫學與生物工程研究所
One of the only things that people who experience total paralysis in all four limbs can do is the ability to produce sound by the vibration of their vocal cords. Therefore, the development of a vocal cords vibration control wheelchair system is essential to help those patients moving around on their will. By attaching the microphone on the left side of the throat, the vibration of the vocal cords can be determined. The basic pronunciation can be distinguished by the difference of the resulting analog waveform (signals), and further instructions (commands) can be carried out by the vocal cords vibration control wheelchair system. For example, if the word "forward" is pronounced in Chinese, the wheelchair will then move forward automatically. To instruct the movement of wheelchair by determining the variation of the output signal which generated by vocal cords is not an easy task. Hence, a rapid and real-time processor with FPGA system, National Instrument (NI, Austin, TX) CompactRIO (cRIO-9014) is used as the develop platform. Base on its flexibility, small size, and rugged form, we can add something new in CompactRIO. In addition, when the wheelchair moves, CompactRIO can perform normally with impact vibration. The most important thing is that CompactRIO has real-time processor, it can analyze the analog waveform (signal) that generated by user rapidly and reactively response the operations that wheelchair should do.